package com.freight.file.util;

import org.springframework.web.multipart.MultipartFile;
import sun.misc.BASE64Encoder;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class MyFileUtils {
    public static Boolean isImageFile(String fileName) {
        String[] img_type = new String[]{".jpg", ".jpeg", ".png", ".gif", ".bmp"};
        if (fileName == null) {
            return false;
        }
        fileName = fileName.toLowerCase();
        for (String type : img_type) {
            if (fileName.endsWith(type)) {
                return true;
            }
        }
        return false;
    }

    public static File convert(MultipartFile file) throws IOException {
        File convFile = new File(file.getOriginalFilename());
        convFile.createNewFile();
        FileOutputStream fos = new FileOutputStream(convFile);
        fos.write(file.getBytes());
        fos.close();
        return convFile;
    }

    public static String imageToBase64Str(InputStream inputStream) {
        byte[] data = null;
        try {
            data = new byte[inputStream.available()];
            inputStream.read(data);
            inputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 加密
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);
    }

}
